| U.S.A.-Coldspring O-3-25466 | Jet Oil Producers, Inc. only | Coline | San Jacinto | 1 | 151K | 50.3K | Mar 2012 – Apr 2026 |
| U.S.A. 60915 Unit O-6-13507 | L.C.S. Production Company only | Brookeland (Austin Chalk, 8800) | Sabine | 2 | 133K | 493K | Aug 1995 – Jul 2004 |
| U.S.A. Unit A-277 O-6-13477 | Swift Energy Company only | Brookeland (Austin Chalk, 8800) | Sabine | 1 | 99K | 556K | Aug 1995 – Apr 2004 |
| Hurt O-1-13817 | U.S.A. Plugging Company only | Pearsall (Austin Chalk) | La Salle | 1 | 63.5K | 42.6K | Aug 1993 – Dec 1998 |
| Anderson O-3-16454 | Ramrod Oil and Gas (U.S.A.) Inc. only | Giddings (Austin Chalk-3) | Brazos | 1 | 34.9K | 98.2K | Jun 1994 – Feb 1998 |
| Sheppard Unit O-1-12942 | U.S.A. Plugging Company only | Pearsall (Austin Chalk) | Frio | 1 | 31.9K | 57K | Jan 1993 – Oct 1998 |
| U.S.A. Gas Unit 2 G-4-180337 | Beehive Operating, LLC only | Bob West, North (LZ-5) | Zapata | 1 | 17.6K | 3.74M | Dec 2000 – Jul 2015 |
| Sweeney, Camille O-1-13240 | U.S.A. Plugging Company only | Pearsall (Austin Chalk) | Frio | 1 | 16.9K | 3.44K | Jan 1993 – Aug 1999 |
| U.S.A. G-6-132766 | Adamas Energy LLC only | Huxley (Pettit) | Shelby | 1 | 14.7K | 736K | Jan 1993 – Oct 2023 |
| Wineman O-3-22568 | Ramrod Oil and Gas (U.S.A.) Inc. only | Giddings (Austin Chalk-3) | Brazos | 2 | 12.1K | 23.3K | Aug 1994 – Dec 1995 |
| Johnston -H- O-1-4746 | U.S.A. Plugging Company only | Pearsall (Austin Chalk) | Frio | 2 | 9.69K | 105 | Nov 1994 – May 2004 |
| Mitchell Pasture O-3-15766 | Ramrod Oil and Gas (U.S.A.) Inc. only | Giddings (Austin Chalk-3) | Brazos | 1 | 6.22K | 15.8K | Jan 1993 – Dec 1995 |
| Atlantic Fee O-10-10088 | Taurus Exploration U.S.A., Inc. only | Brown & Thorp (Clear Fork) | Pecos | 1 | 6.22K | 21 | Jan 1993 – Dec 1997 |
| State-Sullivan -E- O-10-512 | Taurus Exploration U.S.A., Inc. only | Brown & Thorp (Clear Fork) | Pecos | 4 | 5.69K | 21 | Jan 1993 – Nov 1997 |
| U.S.A. Gas Unit No. 1 G-4-166801 | Beehive Operating, LLC only | Bob West, North (L-1,L-2,L-3) | Zapata | 1 | 5.34K | 2.46M | Nov 1997 – Mar 2024 |
| Canon-Whatley "48" O-11-66637 | Taurus Exploration U.S.A., Inc. only | JO-Mill (Spraberry) | Borden | 2 | 5.02K | 28.3K | Jan 1993 – Jul 1997 |
| Trevino "A" O-1-13354 | U.S.A. Plugging Company only | Pearsall (Austin Chalk) | Frio | 1 | 3.64K | 75 | Jan 1993 – Mar 2000 |
| State-Sullivan -D- O-10-511 | Taurus Exploration U.S.A., Inc. only | Brown & Thorp (Clear Fork) | Pecos | 8 | 2.44K | 21 | Jan 1993 – Dec 1997 |
| Conatser U.S.A. G-14-163594 | Presidio Petroleum LLC only | Canadian, SE (Douglas) | Hemphill | 1 | 1.6K | 552K | Apr 1997 – Apr 2026 |
| U.S.A. LB G-6-249431 | Atlas Operating LLC only | Loco Bayou (James Lime) | Nacogdoches | 1 | 1.27K | 2.07M | Oct 2008 – Mar 2026 |
| U.S.A. O-10-38305 | Capitan Energy, Incorporated only | Geraldine, South (Olds -A-) | Culberson | 2 | 1.02K | 0 | Dec 2004 – Jun 2010 |
| White Estate O-5-3519 | Ultra Petroleum (U.S.A.), Inc. only | Cedar Creek, S. (Smackover) | Henderson | 1 | 740 | 1.4K | Apr 1995 – Apr 1995 |
| U.S.A. LB G-6-237915 | Atlas Operating LLC only | Loco Bayou (James Lime) | Nacogdoches | 1 | 707 | 553K | Nov 2007 – Mar 2026 |
| Smith, Rex A. O-8-26326 | Crew Energy U.S.A., Inc. only | Jefferies Luck (Palo Pinto) | Jones | 1 | 450 | 14 | Jan 1993 – Feb 1994 |
| U.S.A. - Hailey, Thomas G-6-148552 | Legacy Reserves Operating LP only | Bridges, E. (James Lime) | Shelby | 1 | 394 | 153K | Jul 1993 – Apr 2012 |
| U.S.A. Gas Unit 2 G-4-168961 | Transtexas Gas Corporation only | Bob West, North (L-1,L-2,L-3) | Zapata | 1 | 375 | 438K | Jul 1998 – Dec 2000 |
| Sweeney, Camille O-1-12964 | U.S.A. Plugging Company only | Touchstone (Olmos -A-) | Frio | 2 | 205 | 22 | Jan 1993 – Jan 1999 |
| U.S.A. Double H G-6-257694 | Silver Hill Energy Operating LLC only | Carthage (Haynesville Shale) | Shelby | 1 | 204 | 1.38M | Jul 2010 – Apr 2026 |
| Mudd O-1-5049 | U.S.A. Plugging, Inc. only | Pearsall (Austin Chalk) | Frio | 1 | 202 | 3 | Nov 1993 – Mar 1994 |
| Richman Ranch G-3-154794 | U.S.A. Plugging Company only | Palacios (Frio -C-) | Matagorda | 1 | 196 | 12.2K | Jul 1995 – Jul 1995 |
| Guerra-U.S.A. Gas Unit "C" G-4-160864 | Merit Energy Company only | Bob West (L-30, 31, 32, 33) | Starr | 1 | 51 | 8.07M | Mar 1996 – Apr 2026 |
| Guerra-U.S.A. Gas Unit "D" G-4-173039 | Merit Energy Company only | Bob West (L-34-47) | Starr | 1 | 50 | 6.68M | Dec 1998 – Apr 2018 |
| Guerra-U.S.A. Gas Unit "D" G-4-171510 | Merit Energy Company only | Bob West (L-34-47) | Starr | 1 | 21 | 7.5M | Feb 1998 – Apr 2026 |
| Smith, Rex A. O-8-25098 | Crew Energy U.S.A., Inc. only | Truby (Strawn) | Jones | 7 | 19 | 12 | Jan 1993 – Dec 1993 |
| Guerra-U.S.A. Gas Unit "D" G-4-192694 | Merit Energy Company only | Bob West (L-34-47) | Starr | 1 | 17 | 3.87M | Nov 2002 – Jun 2024 |
| Guerra-U.S.A. Gas Unit "D" G-4-160884 | Merit Energy Company only | Bob West (L-30, 31, 32, 33) | Starr | 1 | 14 | 5.47M | Oct 1996 – Oct 2022 |
| Cag-Lang-16-4 O-1-13064 | U.S.A. Plugging Company only | Pearsall (Austin Chalk) | Zavala | 1 | 13 | 13 | Jan 1993 – Jan 1994 |
| Guerra-U.S.A. Gas Unit "C" G-4-147406 | Merit Energy Company only | Bob West (L-24, 25, 26) | Starr | 1 | 12 | 10.2M | Nov 1993 – Apr 2026 |
| Guerra-U.S.A. Gas Unit "C" G-4-190273 | Merit Energy Company only | Bob West (L-34-47) | Starr | 1 | 10 | 2.3M | Aug 2002 – Apr 2026 |
| Guerra-U.S.A. Gas Unit "C" G-4-154304 | Merit Energy Company only | Bob West (L-34-47) | Starr | 1 | 7 | 7.29M | Mar 1995 – Apr 2026 |
| Guerra-U.S.A. Gas Unit "C" G-4-167581 | Merit Energy Company only | Bob West (L-30, 31, 32, 33) | Starr | 1 | 6 | 2.05M | Apr 1997 – Apr 2026 |
| Guerra-U.S.A. Gas Unit "D" G-4-164252 | Merit Energy Company only | Bob West (L-34-47) | Starr | 1 | 4 | 2.94M | Mar 1997 – Apr 2026 |
| U.S.A.-Guerra "B" Gas Unit G-4-147761 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 4 | 5.82M | Sep 1993 – Apr 2026 |
| Guerra-U.S.A. Gas Unit "D" G-4-164383 | Merit Energy Company only | Bob West (L-30, 31, 32, 33) | Starr | 1 | 4 | 6.48M | Apr 1997 – Apr 2026 |
| Guerra-U.S.A. Gas Unit "C" G-4-170841 | Merit Energy Company only | Bob West (L-34-47) | Starr | 1 | 3 | 1.63M | Aug 1998 – Apr 2026 |
| Guerra-U.S.A. Gas Unit "C" G-4-168764 | Merit Energy Company only | Bob West (L-30, 31, 32, 33) | Starr | 1 | 2 | 3.84M | Jan 1998 – Apr 2026 |
| U.S.A.-Guerra "B" Gas Unit G-4-156457 | Merit Energy Company only | Bob West (L-27, 28, 29) | Starr | 1 | 1 | 5.08M | Aug 1995 – Apr 2026 |
| U.S.A.-Guerra "B" Gas Unit G-4-151735 | Merit Energy Company only | Bob West (L-24, 25, 26) | Starr | 1 | 1 | 1.25M | Jul 1994 – Apr 2026 |
| U.S.A.-Guerra "B" Gas Unit G-4-164045 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 1 | 1.65M | Dec 1996 – Apr 2026 |
| U.S.A.-Guerra "B" Gas Unit G-4-145774 | Merit Energy Company only | Bob West (L-24, 25, 26) | Starr | 1 | 1 | 4.25M | Mar 1993 – Jan 2020 |